Electrochemical Properties of Activated Polyacrylonitrile/pitch Carbon Fibers Produced Using Electrospinning

Bulletin of the Korean chemical society

Marilou E dela Cruz¹  Nhu Ngoc Bui¹  Bo Hye Kim¹  John P Ferraris¹  Kap Seung Yang¹ 

关键词: Electrospinnability;    Blend;    Activated carbon fiber;    Supercapacitor;    Electrochemical test;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The electrospinnability of pitch was improved by blending in a solution of polyacrylonitrile (PAN) resulting in the reduction of the average fiber diameter from 2000 to 750 nm. Activated carbon fibers (ACFs) derived by stabilization, carbonization and steam activation at 700, 800, and 900 oC of the PAN/pitch electrospun fibers for 60 min were investigated as electrodes for supercapacitors. The Brunauer, Emmett, Teller (BET) specific surface area ranged from 732 to 1877 m2g-1 and the specific capacitance from 75.5 to 143.5 Fg-1, depending on the activation conditions. Electrodes from the electrospun web activated at 900 oC exhibited a particularly quick response showing a high frequency of 5.5 Hz at a phase angle of ?45o of the impedance spectroscopy.

【 授权许可】

Unknown